I'm running into a problem with GCC 4.6.1 x86-64 when
compiling coreutils (latest git version), configured
with --enable-gcc-warnings. A bogus warning is generated,
causing "make" to fail. The warning is "function might be
candidate for attribute 'pure' if it is known to return
normally [-Wsuggest-attribute=pure]", and it points to the
"advance" function in test.c. The warning is also generated
for lbracket.c, which includes test.c.
This is due to a GCC bug that has just been confirmed; see
<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50021>.
For now I'm leaving this alone, but I thought I'd give
others a heads-up. The coreutils code is pretty
crufty but on the other hand I dislike modifying code just
to work around bugs in static checkers.